Wind Energy For Kids

Michael asks…

Does anyone know a good website where i can find out about windmills?

It’s for a Science fair and i really need help…Plz ppl…

Windmill Farms answers:

Wind Energy
The earliest known windmills were in Persia (Iran) … Alternative energy sources, paving the way for the re-entry of the windmill to …www.eia.doe.gov/kids/energyfacts/sources/renewable/wind.html – 20k – Cached – More from this site
FPL Energy – Wind Energy
… Never-ending resource, it generates clean energy using the most up-to-date … Download our brochure, The Nation’s Leader In Wind Energy (4,584k PDF) …www.fplenergy.com/renewable/contents/wind.shtml – 22k – Cached – More from this site
Open Directory – Science: Technology: Energy: Renewable: Wind: Windmills
Windmill Construction Manual – Selling a manual to build windmills for water … Windmill World – An extensive site about windmills, (especially in the UK) …dmoz.org/Science/Technology/Energy/Renewable/Wind/Windmills – 7k – Cached – More from this site
Windmill – Wikipedia, the free encyclopedia
A windmill is an engine powered by the wind to produce energy, often contained … Renewable energy: Windmills at the Open Directory Project (suggest site) …en.wikipedia.org/wiki/Windmills – 63k – Cached – More from this site
Energy Windmills in Home Furnishing at Shopping.com
Find Energy Windmills stores, compare Energy Windmills prices. Shopping.com helps shoppers find, compare, and buy anything in just secondswww.shopping.com/xGS-Energy_Windmills – More from this site
U.S. Department of Energy Wind and Hydropower Technologies
Information on the DOE wind and hydro energy program, wind power projects, wind turbine technology and research, and wind energy basics.www.eere.energy.gov/windandhydro – 26k – Cached – More from this site
Windmills – Search Results – MSN Encarta
Windmill. Windmill, machine that converts wind into useful energy. … Renewable energy, windmills among sources … Wind Energy, produced by windmills …encarta.msn.com/encnet/refpages/search.aspx?q=Windmills – 52k – Cached – More from this site
Windmills At Work
… Wind’s energy is transferred to the object, in this case the windmill, causing it to move. … And convert the kinetic energy windmill to some other object …sln.fi.edu/tfi/units/energy/windatwork.html – 10k – Cached – More from this site
energy conversion :: Windmills — Britannica Student Encyclopedia
Windmills, like waterwheels, were among the original prime … Windmill and other predecessors of modern wind turbines, see the article energy conversion. …www.britannica.com/ebi/article-45922

Susan asks…

experiment that shows objects gain energy the higher they are lifted?

i need and experiment that show objects gain more energy the higher they are lifted

Windmill Farms answers:

Drop a ball on someones head from 2 inches 3 inches 4 inches etc and see which one hurts the most :o) just kidding

Roll a ball down an incline and have it hit a horizontally positioned spring at the bottom and measure the deflection.

Or

Attach a weight from a string (like a swing) (or make a pendulum) and have it hit the spring and measure the deflection. Make sure the spring’s largest deflection is a bit before the weight’s upswing or gravity will be robbing energy as it swings back up. Probably best to use the incline. Unless you like the coolness factor of a swinging pendulum.

Using a marker attached to the spring (where it meets the incoming weight), position it so that it can trace a line on a revolving cylinder. It will show the change in deflection as a side ways “V” or stretched “U” shape. And you can also discuss why the shape of the tracing is like it is because of the springs constant. Attach a pulley to this horizontal cylinder and wind up some string around it (or just wrap it around the cylinder) … Then attach the other end of the string to another weight. Make a release mechanism on the floor above the weight strung to the cylinder, so that when it hits the floor, it releases the other weight, that you are dropping from different heights. Thus, the cylinder will spin at the same or nearly the same rate each time. (makes it repeatable and more accurate.) or just attach the cylinder to a motor (easy but less cool).

You could do this ahead of time with 3 different distances(heights) and have the tracings out already for the project … Then calculate the springs deflection for other release heights with a graph of an equation using hooke’s law.

Where hooke states F=-kx
x is the displacement of the end of the spring from its equilibrium position (in SI units: “m”); F is the restoring force exerted by the material (in SI units: “N”); and k is the force constant (or spring constant) (in SI units: “N·m-1″ or “kgs-2″).

If you can position another pendulum in line with the 1st … Having the 2nd in the horizontal position ready to receive and impact from the first … Then you can show that when they collide the second will arc around higher the higher the 1st is released. That may not be impressive as the other but easy to make I’m sure.

Sharon asks…

How is wind made?

Windmill Farms answers:

It is caused by those on the left opening their mouths and spewing forth more lies.

Just kidding

Wind is the flow of air. More generally, it is the flow of the gases which compose an atmosphere; since wind is not only an Earth based phenomenon.
Winds are commonly classified by their spatial scale, their speed, the types of forces that cause them, the geographic regions in which they occur, or their effect.
There are global winds, such as the wind belts which exist between the atmospheric circulation cells. There are upper-level winds which typically include narrow belts of concentrated flow called jet streams. There are synoptic-scale winds that result from pressure differences in surface air masses in the middle latitudes, and there are winds that come about as a consequence of geographic features, such as the sea breezes. Mesoscale winds are those which act on a local scale, such as gust fronts. At the smallest scale are the microscale winds, which blow on a scale of only tens to hundreds of meters and are essentially unpredictable, such as dust devils and microbursts.
Forces which drive wind or affect it are the pressure gradient force, the Coriolis force, buoyancy forces, and friction forces. When a difference in pressure exists between two adjacent air masses, the air tends to flow from the region of high pressure to the region of low pressure. On a rotating planet, flows will be acted upon by the Coriolis force, in regions sufficiently far from the equator and sufficiently high above the surface.
The two major driving factors of large scale global winds are the differential heating between the equator and the poles (difference in absorption of solar energy between these climate zones), and the rotation of the planet.

Lisa asks…

the disadvantages of windmills and disadvantages of solar energy.?

hey i’m doing a debate in my high school science class and its about alternative energy. my group is doing wind energy and there aren’t really that many disadvantages that i could find. one disadvantage was that it kills hundreds of birds. what point should i back it up with if the opposing team mentions it? also what are some good points that i can through at the opposing team? their doing solar panels/solar energy.

Windmill Farms answers:

Where did you get the idea that wind mills kill birds ? Not so, the trouble is that you youngsters are told stories like the killing of birds.Fact is they are not used enough, China has more wind farms and enough to power a very large industrial city out in the no mans land of China. This country tells you kids what they want you to buy into, called” wagging the dog ” dis-information, just look at the oil spill. We we’re told that the leak was pouring out at approx 5 thousand gallons- reality was that it was sending more then five times this amount.
So in the long run the only disadvantage is that they’re not enough wind farms in use, so you do some more in-depth searching on wind farms and this will get you a winning team to work.

Paul asks…

How can wind turbines be helpful for a school?

So I am doing a summer school project of sustainability and I chose wind turbines, how could they be used for a school?

Windmill Farms answers:

Hey Ally, I’m sure you already know that wind turbines generate electricity, or pump water using the power of the wind. The real benefit of putting a turbine on school property however is not in the energy they produce, but the knowledge. We live in a wind and solar powered home now, it has been for about 12 years. The last 5 years or so we’ve been teaching solar power seminars to 5th graders at our local school, and then loading a bus with students and bringing them out to the house so they can see a solar powered home first hand. It is a great deal more enlightening to put your hand on something and see it work than just talking about it, and renewable energy is no exception.

Many schools today are installing wind turbines and solar arrays to accomplish both items. These devices reduce the schools energy cost by producing at least some of the electricity the school uses. They also have courses set up to teach wind or solar technology, maintenance and installation. So the school finishes the year with a smaller electric bill, and the students finish the year with at least some understanding of these technologies that exceeds other area schools, this gives these students an advantage later in life should they decide to seek a career in this area. Your school would benefit the same way if they were able to install a wind turbine, and even more so if they could attract a grant for the equipment, there are lots of them available, just try googling, “School grants for wind turbines.” This would be the best case scenario, someone else paying for your schools turbine, which lowers the electric bill once it is installed, and increases the education base of the students. A further advantage that is only now being seen is the demand for student enrollment can go up when a school has a turbine or solar array, and a module in the science program that teaches the kids how it works. More parents are starting to pay attention to what schools offer, and in many states, school choice can make transferring to that school, even at the Elemtary level a possibility. No school in their right mind would turn down an opportunity like this.

The college level is no different. As an example, Kalamazoo Valley Community College (KVCC) near Kalamazoo, Michigan now has a large turbine installed, and a complete 2 year training program for Wind Turbine Maintenance. Their enrollement went up almost immediately after the program started, and their electric bill went down. Now they are attracting additional grant money to expand the program in other areas such as solar, hydro and biomass energy.

These are the ways a wind turbine can be helpful to a school Ally. Take some time to read this post a few times, look up related items on the internet, and form an outline for your answer. Then present it as your project, and you might get more attention than just a good grade on the subject. Good luck Ally, and take care, Rudydoo

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